Centrifuge



Aug. 22, 1933.

A. E. DRISSNER :1- AL CENTRIFUGE Filed Oct. 15, L930 2 Sheets-Sheet 1 B. peascrce A lToRNEY g- 1933- A. E. DRISSNER ET AL CENTRIFUGE Filed Oct. 15, 1930 2 Sheets-Sheet 2 ATTORNEY n m 2 mm D E A Patented Aug. 22, 1933 UNITED, STATES T Q -CB1i CENTRIFUGE Alfred E. Dris sner and Gustav B. Petsche, Cleveland, Ohio, assignors to The National Acme Company, Cleveland, Ohio, a Corporation of Ohio Application October 15, 1930; Serial No. 488,802

4 8 Claims.

in Letters Patent No. 1,714,986, dated May 28,.

1929, granted to Paterson and Petsche, and reference to which patent is made for the detailed description of the construction of the centrifuge which is herein deemed unnecessary since the construction of the major parts of the .cen-

trifuge shown herein may be similar to that disclosed in that patent. In the drawings accompanying and forming a part of this specification, Figure l is a vertical section of this improved centrifuge.

Figure 2 is an enlarged detail view of the lower end of the bowl.

Figure 3' is a bottom view of the bowl.

Figure 4 is a view of the lower portion of the impeller blade.

Figure 5 is a top view of the impeller blade, and

Figure 6 is a partly sectional edge view thereof.

Similar characters of reference indicate corresponding parts in the several views.

Before explaining in detail the present improvement and mode of operation thereof, We

desire to have it understood that the invention is not limited to the details of construction and.

arrangement of parts which are illustrated in the accompanying drawings, since the invention 5 is capable of other embodiments, and that the phraseology employed is for the purpose of description and not of limitation. a

The centrifuge shown and described comprises a suitable bowl 2 located within a housing, not shown, and rotated by a suitable means and provided with a bottom or base plate 3 and an upper disk or closure 4, and within this bowl is usually located a'plurality of cylinders or tubes including a central tube 5 supported by a disk 6 having suitable radial ports '7 communicating with the bowl.

The tube 5 extends upwardly through the bowl and at the top thereof is located a plurality of receptacles or pans for the reception of the separated or claified fluids. Opening into the top of the tube 5 is a jet nozzle or inlet tube 8 for the passage of the fluid to be treated. Located within this inner tube is a twisted or screw-formed paddle or impeller blade 9 having its upper end close to and almost touching the mouth of the inlet tube whereby the .jet of. fluid from the inlet tube is shot onto the end of the impeller with some force and thus not given an opportunity to disperse and lose its energy in the wrong direction as would be the casewhere the upper end of the impeller located away from the inlet tube, being suitably secured in position at its lower end to the'disk 6 for rotation with the bowl and having a diameter substantially coincident with the interior diameter of the tube, and in the present instance, the blade is provided with a pair of radial ears or off-set portions 10 adapted to be engaged by a pair of pins 11 carried at the under side of the disk 6, the disk having a central opening therethrough for the passage of the blade, whereby, as the bowl and the disk 6 are rotated, these pins engage the ears of the projections 10 of the impeller blade and likewise rotate it.

In the present instance, the blade is shown as made of sheet metal reinforced at its lower end .by a pair of overlappingmembers 12 suitably riveted or secured to the twisted blade portion and which is shown provided with an opening centrifuge, the capacity of the machine is materially increased, 'tests having demonstrated that this impeller blade increases the capacity of the machine from fifteen gallons per minute to sixty gallons per minute, in that it causes the fluid to be fed through faster, thereby increasing the capacity of .the machine.

From the foregoing it will be seen that by twisting the impeller blade laterally extending wings are formed to assist in facilitating thepassage of the fluid by reason of the fact that it speeds it upduring its passage through the intake tube and'which speeding up is, of course, in a rotary direction. Obviously this twisted impeller blade could have wings secured thereto in any suitable way, either formed as a part thereof or as by casting or riveting or otherwise shaping the impeller blade.

It is to be understood that, by describing in detail herein any particular form, structure or arrangement, it is not intended to limit the invention beyond the terms of the several claims or the requirements of the prior art.

Having thus explained the nature of our said invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may 110 be made, or all of the modes of its use, we

claim:

1. In a machine of the class described, the

combination of a non-slidable rotary bowl, a

disk secured theretoat the bottom thereof, an intake tube located within said bowl for rotation therewith, an inlet tube communicating with the top of said first tube,'and a twisted impeller blade secured only at the lower end thereofto said disk and having its upper end adjacent to the inlet tube, said impeller blade extending thereto at the bottomthereof', anintake tube located within said bowl for rotation therewith,

an inlet tube communicating with the top of said first tube, and a twisted impeller blade secured at the lower end thereof to said disk and having its upper end adjacent to the inlet tube, said impeller blade extending through the disk and having a pair of radially extending ears co-operating with a pair of pins carried at the bottom of the disk for rotating the impeller blade. I

3. 'In a machine of the class described, the combination of a rotary bowl, an intake tube therein extending to the bottom of the bowl, a jet producing nozzle within said intake tube and located above the top of the bowl, a rotary impeller having a long gradual twist and with a single pitch extending from end to end thereby to act asa paddle supported at the bottom of the bowl and terminating adjacent to said nozzle and above the top of the bowl, and constructed' to impart a rapid rotary movement to the fluid from said nozzle.

ALFRED E. DRISSNER. GUSTAV B. PETSCHE. 

